/* $NetBSD: zs_any.c,v 1.5 2001/11/26 18:06:36 fredette Exp $ */ /*- * Copyright (c) 1996 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Gordon W. Ross and Matthew Fredette. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Zilog Z8530 Dual UART driver (machine-dependent part) * * Runs two serial lines per chip using slave drivers. * Plain tty/async lines use the zs_async slave. * Sun keyboard/mouse uses the zs_kbd/zs_ms slaves. */ #include "opt_kgdb.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef KGDB #include #include #include #include #endif #include #include #include /**************************************************************** * Autoconfig ****************************************************************/ /* Definition of the driver for autoconfig. */ static int zs_any_match __P((struct device *, struct cfdata *, void *)); static void zs_any_attach __P((struct device *, struct device *, void *)); struct cfattach zs_obio_ca = { sizeof(struct zsc_softc), zs_any_match, zs_any_attach }; struct cfattach zs_obmem_ca = { sizeof(struct zsc_softc), zs_any_match, zs_any_attach }; struct cfattach zs_mbmem_ca = { sizeof(struct zsc_softc), zs_any_match, zs_any_attach }; /* * Is the zs chip present? */ static int zs_any_match(parent, cf, aux) struct device *parent; struct cfdata *cf; void *aux; { struct mainbus_attach_args *ma = aux; bus_space_handle_t bh; int matched; /* Make sure there is something there... */ if (bus_space_map(ma->ma_bustag, ma->ma_paddr, sizeof(struct zsdevice), 0, &bh)) return (0); matched = (bus_space_peek_1(ma->ma_bustag, bh, 0, NULL) == 0); bus_space_unmap(ma->ma_bustag, bh, sizeof(struct zsdevice)); if (!matched) return (0); /* Default interrupt priority (always splbio==2) */ if (ma->ma_pri == -1) ma->ma_pri = ZSHARD_PRI; return (1); } /* * Attach a found zs. */ static void zs_any_attach(parent, self, aux) struct device *parent; struct device *self; void *aux; { struct zsc_softc *zsc = (void *) self; struct mainbus_attach_args *ma = aux; bus_space_handle_t bh; zsc->zsc_bustag = ma->ma_bustag; zsc->zsc_dmatag = ma->ma_dmatag; zsc->zsc_promunit = self->dv_unit; zsc->zsc_node = 0; /* Map in the device. */ if (bus_space_map(ma->ma_bustag, ma->ma_paddr, sizeof(struct zsdevice), BUS_SPACE_MAP_LINEAR, &bh)) panic("zs_any_attach: can't map"); /* This is where we break the bus_space(9) abstraction: */ zs_attach(zsc, (void *)bh, ma->ma_pri); } int zs_console_flags(promunit, node, channel) int promunit; int node; int channel; { int cookie, flags = 0; /* * Use `promunit' and `channel' to derive the PROM * stdio handles that correspond to this device. */ if (promunit == 0) cookie = PROMDEV_TTYA + channel; else if (promunit == 1 && channel == 0) cookie = PROMDEV_KBD; else cookie = -1; /* * We have the console keyboard only if it's a Sun-2 * keyboard or better. (i.e., not a Sun-1 parallel kbd). */ if (cookie == prom_stdin() && (cookie != PROMDEV_KBD || prom_kbdid() >= KB_SUN2)) flags |= ZS_HWFLAG_CONSOLE_INPUT; /* * Prevent the keyboard from matching the output device * (note that PROMDEV_KBD == PROMDEV_SCREEN == 0!). */ if (cookie != PROMDEV_KBD && cookie == prom_stdout()) flags |= ZS_HWFLAG_CONSOLE_OUTPUT; return (flags); } #ifdef KGDB /* * Find a zs mapped by the PROM. Currently this only works to find * zs0 on obio. */ void * zs_find_prom(unit) int unit; { bus_addr_t zs0_phys; bus_space_handle_t bh; extern int sun68k_find_prom_map __P((bus_addr_t, bus_type_t, int, bus_space_handle_t *)); if (unit != 0) return (NULL); /* * The physical address of zs0 is model-dependent. */ zs0_phys = (cpu_machine_id == SUN2_MACH_120 ? 0x002000 : 0x7f2000); if (sun68k_find_prom_map(zs0_phys, PMAP_OBIO, sizeof(struct zsdevice), &bh)) return (NULL); return ((void*) bh); } #endif /* KGDB */